From 8ba373fecb91b8f276c754f63a5a7f1490f76dcc Mon Sep 17 00:00:00 2001
From: james <james>
Date: Mon, 4 Feb 2008 20:23:55 +0000
Subject: [PATCH] *** empty log message ***

---
 src/ansi.c        |  41 ++++---
 src/crt.c         |  88 ++++++++++++++-
 src/crt.h         |   7 +-
 src/libsympathy.c |  42 +++----
 src/prototypes.h  |  39 +++++++
 src/vt102.c       | 274 ++++++++++++++++++++++++++++++++++++++++------
 src/vt102.h       |   9 ++
 7 files changed, 428 insertions(+), 72 deletions(-)

diff --git a/src/ansi.c b/src/ansi.c
index e7cd934..5e70634 100644
--- a/src/ansi.c
+++ b/src/ansi.c
@@ -10,6 +10,9 @@ static char rcsid[] = "$Id$";
 
 /*
  * $Log$
+ * Revision 1.4  2008/02/04 20:23:55  james
+ * *** empty log message ***
+ *
  * Revision 1.3  2008/02/04 05:45:55  james
  * ::
  *
@@ -28,17 +31,20 @@ ansi_write (ANSI * a, char *buf, int n)
   write (a->fd, buf, n);
 }
 
-void 
-ansi_getsize(ANSI *a)
+void
+ansi_getsize (ANSI * a)
 {
-struct winsize sz={0};
-if (ioctl(a->fd,TIOCGWINSZ,&sz)) {
-	a->size.x=CRT_COLS;
-	a->size.y=CRT_ROWS;
-} else {
-	a->size.x=sz.ws_col;
-	a->size.y=sz.ws_row;
-}
+  struct winsize sz = { 0 };
+  if (ioctl (a->fd, TIOCGWINSZ, &sz))
+    {
+      a->size.x = CRT_COLS;
+      a->size.y = CRT_ROWS;
+    }
+  else
+    {
+      a->size.x = sz.ws_col;
+      a->size.y = sz.ws_row;
+    }
 
 }
 
@@ -48,9 +54,10 @@ ansi_move (ANSI * a, CRT_Pos p)
 {
   char buf[16];
   int n;
-  int dx = a->pos.x - p.x;
-  int dy = a->pos.y - p.y;
+  int dx = p.x - a->pos.x;
+  int dy = p.y - a->pos.y;
 
+//  a->pos.x = ANSI_INVAL;
 
   if (a->pos.x != ANSI_INVAL)
     {
@@ -107,12 +114,12 @@ ansi_move (ANSI * a, CRT_Pos p)
             }
           else if (dy > 0)
             {
-              n = snprintf (buf, sizeof (buf), "\033[%dE", -dy);
+              n = snprintf (buf, sizeof (buf), "\033[%dE", dy);
               ansi_write (a, buf, n);
             }
           else
             {
-              n = snprintf (buf, sizeof (buf), "\033[%dF", dy);
+              n = snprintf (buf, sizeof (buf), "\033[%dF", -dy);
               ansi_write (a, buf, n);
             }
         }
@@ -168,6 +175,8 @@ ansi_set_attr (ANSI * a, int attr)
   if (!dif)
     return;
 
+  a->attr = attr;
+
   if (attr == CRT_ATTR_NORMAL)
     {
       ansi_force_attr_normal (a);
@@ -207,6 +216,7 @@ ansi_set_attr (ANSI * a, int attr)
           ansi_write (a, "\033[22m", 5);
         }
     }
+
 }
 
 
@@ -240,6 +250,7 @@ ansi_cls (ANSI * a)
   CRT_Pos p = { 0 };
 
   crt_cls (&a->crt);
+
   ansi_force_attr_normal (a);
   ansi_move (a, p);
   ansi_write (a, "\033[2J", 4);
@@ -287,7 +298,7 @@ ansi_reset (ANSI * a)
 {
 // FIXME: -- echos back crap?
 //  ansi_write (a, "\033[c", 3);
-  ansi_getsize(a);
+  ansi_getsize (a);
 
   a->pos.x = ANSI_INVAL;
   a->hide_cursor = ANSI_INVAL;
diff --git a/src/crt.c b/src/crt.c
index 8b7f9d5..36011a9 100644
--- a/src/crt.c
+++ b/src/crt.c
@@ -10,6 +10,9 @@ static char rcsid[] = "$Id$";
 
 /*
  * $Log$
+ * Revision 1.3  2008/02/04 20:23:55  james
+ * *** empty log message ***
+ *
  * Revision 1.2  2008/02/04 02:05:06  james
  * *** empty log message ***
  *
@@ -20,16 +23,95 @@ static char rcsid[] = "$Id$";
 
 #include "project.h"
 
+void
+crt_erase (CRT * c, CRT_Pos s, CRT_Pos e,int ea)
+{
+  CRT_CA *ps = &c->screen[CRT_ADDR_POS (&s)];
+  CRT_CA *pe = &c->screen[CRT_ADDR_POS (&e)];
+
+  while (ps <= pe)
+    {
+      ps->chr = ' ';
+      if (ea)
+      ps->attr = CRT_ATTR_NORMAL;
+      ps++;
+    }
+
+}
+
 void
 crt_cls (CRT * c)
 {
+  CRT_Pos s = { 0, 0 };
+  CRT_Pos e = { CRT_COLS - 1, CRT_ROWS - 1 };
   int i;
 
-  for (i = 0; i < CRT_CELS; ++i)
+  crt_erase (c, s, e,1);
+
+#if 0
+  for (i = 0; i < CRT_ROWS; ++i)
+    {
+      c->screen[CRT_ADDR (i, i)].chr = '@' + i;
+      c->screen[CRT_ADDR (i, i)].attr = CRT_ATTR_NORMAL;
+    }
+#endif
+
+}
+
+void
+crt_scroll_up (CRT * c, CRT_Pos s, CRT_Pos e,int ea)
+{
+  int l, n;
+  int p;
+
+  s.x=0;
+  e.x=CRT_COLS-1;
+
+  l = e.x - s.x;
+  l++;
+  l *= sizeof (CRT_CA);
+
+  n = e.y - s.y;
+
+  p = CRT_ADDR_POS (&s);
+
+  while (n--)
     {
-      c->screen[i].chr = ' ';
-      c->screen[i].chr = CRT_ATTR_NORMAL;
+      memcpy (&c->screen[p], &c->screen[p + CRT_COLS], l);
+      p += CRT_COLS;
     }
+
+  s.y = e.y;
+  crt_erase (c, s, e,ea);
+
+}
+
+void
+crt_scroll_down (CRT * c, CRT_Pos s, CRT_Pos e,int ea)
+{
+  int l, n;
+  int p;
+
+  s.x=0;
+  e.x=CRT_COLS-1;
+
+  l = e.x - s.x;
+  l++;
+  l *= sizeof (CRT_CA);
+
+  n = e.y - s.y;
+
+  p = CRT_ADDR_POS (&e);
+
+  while (n--)
+    {
+      memcpy (&c->screen[p], &c->screen[p + CRT_COLS], l);
+      p -= CRT_COLS;
+    }
+
+  e.y = s.y;
+  crt_erase (c, s, e,ea);
+
 }
 
 void
diff --git a/src/crt.h b/src/crt.h
index a46affa..ca3fc00 100644
--- a/src/crt.h
+++ b/src/crt.h
@@ -12,6 +12,9 @@
 
 /*
  * $Log$
+ * Revision 1.2  2008/02/04 20:23:55  james
+ * *** empty log message ***
+ *
  * Revision 1.1  2008/02/03 23:31:25  james
  * *** empty log message ***
  *
@@ -24,8 +27,8 @@
 #define CRT_COLS 80
 
 #define CRT_CELS (CRT_ROWS*CRT_COLS)
-#define CRT_ADDR(r,c) (((r)*CRT_ROWS)+(c))
-#define CRT_ADDR_POS(p) ((((p)->y)*CRT_ROWS)+((p)->x))
+#define CRT_ADDR(r,c) (((r)*CRT_COLS)+(c))
+#define CRT_ADDR_POS(p) ((((p)->y)*CRT_COLS)+((p)->x))
 
 #define CRT_ATTR_NORMAL    0x0
 #define CRT_ATTR_UNDERLINE 0x1
diff --git a/src/libsympathy.c b/src/libsympathy.c
index 013afc7..e86c088 100644
--- a/src/libsympathy.c
+++ b/src/libsympathy.c
@@ -11,6 +11,9 @@ static char rcsid[] =
 
 /*
  * $Log$
+ * Revision 1.4  2008/02/04 20:23:55  james
+ * *** empty log message ***
+ *
  * Revision 1.3  2008/02/04 05:45:55  james
  * ::
  *
@@ -25,36 +28,37 @@ static char rcsid[] =
 
 #include "project.h"
 
-struct termios old={0};
+struct termios old = { 0 };
 
-static void foo(int not)
+static void
+foo (int not)
 {
-  tcsetattr(0,TCSANOW,&old);
-  exit(1);
+  tcsetattr (0, TCSANOW, &old);
+  exit (1);
 }
 
 
 void
 testy (void)
 {
-  struct termios raw={0};
+  struct termios raw = { 0 };
   VT102 v = { 0 };
   ANSI a = { 0 };
   fd_set rfd;
   int fd;
   char c;
- 
 
-  signal(SIGINT,foo);
 
-  tcgetattr(0,&old);
-  tcgetattr(0,&raw);
-  cfmakeraw(&raw);
-  tcsetattr(0,TCSANOW,&raw);
+  signal (SIGINT, foo);
+
+  tcgetattr (0, &old);
+  tcgetattr (0, &raw);
+  cfmakeraw (&raw);
+  tcsetattr (0, TCSANOW, &raw);
 
   a.fd = 1;
 
-//vt102_reset(&v);
+  vt102_reset (&v);
   ansi_reset (&a);
 
 
@@ -71,20 +75,20 @@ testy (void)
         continue;
       if (FD_ISSET (0, &rfd))
         {
-          read (0, &c, 1);
-	  if (c==3) {
-  tcsetattr(0,TCSANOW,&old);
-	  exit(1);
-	}
-			
+          if ((read (0, &c, 1) <= 0) || (c == 3))
+            break;
+
           write (fd, &c, 1);
         }
       if (FD_ISSET (fd, &rfd))
         {
-          read (fd, &c, 1);
+          if ((read (fd, &c, 1) <= 0))
+            break;
           //write (1, &c, 1);
           vt102_parse_char (&v, c);
           ansi_draw (&a, &v.crt);
         }
     }
+  tcsetattr (0, TCSANOW, &old);
+  printf ("QUAT\n");
 }
diff --git a/src/prototypes.h b/src/prototypes.h
index e69de29..67e3aaf 100644
--- a/src/prototypes.h
+++ b/src/prototypes.h
@@ -0,0 +1,39 @@
+/* ansi.c */
+void ansi_write(ANSI *a, char *buf, int n);
+void ansi_getsize(ANSI *a);
+void ansi_move(ANSI *a, CRT_Pos p);
+void ansi_showhide_cursor(ANSI *a, int hide);
+void ansi_force_attr_normal(ANSI *a);
+void ansi_set_attr(ANSI *a, int attr);
+void ansi_render(ANSI *a, CRT_CA ca);
+void ansi_cls(ANSI *a);
+void ansi_draw(ANSI *a, CRT *c);
+void ansi_reset(ANSI *a);
+/* crt.c */
+void crt_erase(CRT *c, CRT_Pos s, CRT_Pos e, int ea);
+void crt_cls(CRT *c);
+void crt_scroll_up(CRT *c, CRT_Pos s, CRT_Pos e, int ea);
+void crt_scroll_down(CRT *c, CRT_Pos s, CRT_Pos e, int ea);
+void crt_reset(CRT *c);
+void crt_insert(CRT *c, CRT_CA ca);
+/* html.c */
+void html_entity(FILE *f, int c);
+void html_render(FILE *f, CRT_CA c);
+void html_draw(FILE *f, CRT *c);
+/* libsympathy.c */
+struct termios old;
+void testy(void);
+/* render.c */
+/* testtty.c */
+int open_fd_to_bash(void);
+/* version.c */
+/* vt102.c */
+void vt102_cursor_normalize(VT102 *v, int do_wrapscroll, int use_margins);
+void vt102_cursor_motion(VT102 *v, int x, int y, int wrapscroll);
+void vt102_delete_from_line(VT102 *v, CRT_Pos p);
+void vt102_parse_esc(VT102 *v, int c);
+void vt102_parse_csi(VT102 *v, char *buf, int len);
+void vt102_status_line(VT102 *v, char *str);
+void vt102_parse_char(VT102 *v, int c);
+void vt102_parser_reset(VT102_parser *p);
+void vt102_reset(VT102 *v);
diff --git a/src/vt102.c b/src/vt102.c
index d29e708..4fb48c5 100644
--- a/src/vt102.c
+++ b/src/vt102.c
@@ -10,6 +10,9 @@ static char rcsid[] = "$Id$";
 
 /*
  * $Log$
+ * Revision 1.5  2008/02/04 20:23:55  james
+ * *** empty log message ***
+ *
  * Revision 1.4  2008/02/04 05:45:55  james
  * ::
  *
@@ -136,91 +139,267 @@ csi_starter (int c)
   return 0;
 }
 
-void vt102_scroll(VT102 *v,int start,int end)
-{
-
-}
 
 void
-vt102_cursor_normalize (VT102 * v, int wrap, int scroll)
+vt102_cursor_normalize (VT102 * v, int do_wrapscroll, int use_margins)
 {
-  if (v->pos.x < -1)            /*don't wrap backwards */
-    v->pos.x = 0;
+  int wrap = do_wrapscroll ? 1 : 0;
+  int scroll = do_wrapscroll ? 1 : 0;
+  CRT_Pos *top, *bottom;
 
-  if (v->pos.x >= CRT_COLS)
+  if (use_margins)
+    {
+      top = &v->top_margin;
+      bottom = &v->bottom_margin;
+    }
+  else
+    {
+      top = &v->screen_start;
+      bottom = &v->screen_end;
+    }
+
+  if (v->pos.x < top->x)        /*don't wrap backwards */
+    v->pos.x = top->x;
+
+  if (v->pos.x > bottom->x)
     {
       if (wrap)
         {
-          v->pos.x = 0;
+          v->pos.x = top->x;
           v->pos.y++;
         }
       else
         {
-          v->pos.x = CRT_COLS - 1;
+          v->pos.x = bottom->x;
         }
     }
 
-  if (v->pos.y < 0)
-    v->pos.y = 0;
+  if (v->pos.y < top->y)
+    v->pos.y = top->y;
 
-  if (v->pos.y >= CRT_ROWS)
+  if (v->pos.y > bottom->y)
     {
       if (scroll)
-        vt102_scroll (v, 0, CRT_ROWS - 1);
-      v->pos.y = CRT_ROWS - 1;
+        crt_scroll_up (&v->crt, *top, *bottom, 1);
+      v->pos.y = bottom->y;
     }
 }
 
 
 void
-vt102_cursor_motion (VT102 * v, int x, int y, int wrap, int scroll)
+vt102_cursor_motion (VT102 * v, int x, int y, int wrapscroll)
 {
   while (x > 0)
     {
       x--;
       v->pos.x++;
-      vt102_cursor_normalize (v, wrap, scroll);
+      vt102_cursor_normalize (v, wrapscroll, 1);
     }
 
   while (x < 0)
     {
       x++;
       v->pos.x--;
-      vt102_cursor_normalize (v, wrap, scroll);
+      vt102_cursor_normalize (v, wrapscroll, 1);
     }
 
   while (y > 0)
     {
       y--;
       v->pos.y++;
-      vt102_cursor_normalize (v, wrap, scroll);
+      vt102_cursor_normalize (v, wrapscroll, 1);
     }
 
   while (y < 0)
     {
       y++;
       v->pos.y--;
-      vt102_cursor_normalize (v, wrap, scroll);
+      vt102_cursor_normalize (v, wrapscroll, 1);
+    }
+}
+
+void
+vt102_delete_from_line (VT102 * v, CRT_Pos p)
+{
+  int n = v->bottom_margin.x - p.x;
+
+  if (n < 0)
+    return;
+
+  if (n)
+    {
+
+      memmove (&v->crt.screen[CRT_ADDR_POS (&p)],
+               &v->crt.screen[CRT_ADDR_POS (&p) + 1], sizeof (CRT_CA) * n);
     }
+
+  v->crt.screen[CRT_ADDR (v->bottom_margin.x, p.y)].chr = ' ';
+/*But not attr due to vt102 bug*/
 }
 
-void vt102_parse_esc(VT102 *v,int c)
+
+void
+vt102_parse_esc (VT102 * v, int c)
 {
-fprintf(stderr, "ESC %d(%c)\n",c,c);
+  fprintf (stderr, "ESC 0%o(%c)\n", c, c);
+}
+
+void
+vt102_parse_csi (VT102 * v, char *buf, int len)
+{
+  char last;
+  char *ptr;
+  char *arg = buf + 1;
+  int narg;
+
+  buf[len] = 0;
+
+  last = buf[len - 1];
+#if 0
+  buf[len - 1] = 0;
+#endif
+
+  if (len>2)
+    {
+      narg = atoi (arg);
+    }
+  else
+    {
+      narg = 1;
+    }
+
+  switch (buf[0])
+    {
+    case '[':
+      switch (last)
+        {
+        case 'A':
+          vt102_cursor_motion (v, 0, -narg, 0);
+          break;
+        case 'B':
+          vt102_cursor_motion (v, 0, narg, 0);
+          break;
+        case 'C':
+          vt102_cursor_motion (v, narg, 0, 0);
+          break;
+        case 'D':
+          vt102_cursor_motion (v, -narg, 0, 0);
+          break;
+        case 'H':
+          v->pos.y = narg - 1;
+
+          ptr = index (arg, ';');
+          if (ptr)
+            v->pos.x = atoi (ptr + 1) - 1;
+          else
+            v->pos.x = 0;
+
+          vt102_cursor_normalize (v, 0, 0);
+          break;
+        case 'J':
+		fprintf(stderr,"OCTOPUS %d\n",narg);
+          switch (narg)
+            {
+            case 1:
+              crt_erase (&v->crt, v->pos, v->screen_end, 1);
+              break;
+            case 2:
+              crt_erase (&v->crt, v->screen_start, v->screen_end, 1);
+              break;
+            }
+          break;
+        case 'K':
+          {
+            CRT_Pos ls = { 0, v->pos.y };
+            CRT_Pos le = { VT102_COLS - 1, v->pos.y };
+            if (len==2)
+              narg = 0;         /*Different default */
+
+            switch (narg)
+              {
+              case 0:
+		fprintf(stderr,"FISH %d %d -> %d %d\n",
+			v->pos.x,v->pos.y,
+			le.x,le.y);
+                crt_erase (&v->crt, v->pos, le, 1);
+                break;
+              case 1:
+		fprintf(stderr,"SOUP %d %d -> %d %d\n",
+			ls.x,ls.y,
+			v->pos.x,v->pos.y);
+                crt_erase (&v->crt, ls, v->pos, 1);
+                break;
+              case 2:
+		fprintf(stderr,"TREE %d %d -> %d %d\n",
+			ls.x,ls.y,
+			le.x,le.y);
+                crt_erase (&v->crt, ls, le, 1);
+                break;
+              }
+          }
+          break;
+
+        case 'P':
+          while (narg--)
+            vt102_delete_from_line (v, v->pos);
+          break;
+        case 'L':
+          if ((v->pos.y >= v->top_margin.y)
+              && (v->pos.y <= v->bottom_margin.y))
+            {
+              while (narg--)
+                crt_scroll_down (&v->crt, v->pos, v->bottom_margin, 1);
+            }
+          break;
+
+        case 'M':
+          if ((v->pos.y >= v->top_margin.y)
+              && (v->pos.y <= v->bottom_margin.y))
+            {
+              while (narg--)
+                crt_scroll_up (&v->crt, v->pos, v->bottom_margin, 0);
+            }
+          break;
+
+        default:
+          fprintf (stderr, "A: CSI %s buf[0]=%c\n", buf,buf[0]);
+        }
+      break;
+    default:
+      fprintf (stderr, "B: CSI %s buf[0]=%c\n", buf,buf[0]);
+    }
+
+
+
 }
 
-void vt102_parse_csi(VT102 *v,char *buf,int len)
+void
+vt102_status_line (VT102 * v, char *str)
 {
-buf[len]=0;
-fprintf(stderr, "CSI %s\n",buf);
+  int i = VT102_COLS;
+  CRT_CA *ca = &v->crt.screen[CRT_ADDR (VT102_STATUS_ROW, 0)];
+
+  while (i--)
+    {
+      ca->attr = CRT_ATTR_REVERSE;
+      ca->chr = *str;
+      if (*str)
+        str++;
+      ca++;
+    }
+
 }
 
+
 void
 vt102_parse_char (VT102 * v, int c)
 {
   VT102_parser *p = &v->parser;
 
-  fprintf(stderr,"%c pc %d %d %d   %d %d\n",c,c,p->in_csi,p->in_escape,v->pos.x,v->pos.y);
+#if 0
+  fprintf (stderr, "%c pc %d %d %d   %d %d\n", c, c, p->in_csi, p->in_escape,
+           v->pos.x, v->pos.y);
+#endif
   if (p->in_csi)
     {
       p->csi_buf[p->csi_ptr++] = c;
@@ -259,19 +438,17 @@ vt102_parse_char (VT102 * v, int c)
          /*ACK*/ case 6:
          /*BEL*/ case 7:
          /*BS*/ case 8:
-          vt102_cursor_motion (v, -1, 0, 0, 0);
+          vt102_cursor_motion (v, -1, 0, 1);
           break;
          /*HT*/ case 9:
           break;
          /*LF*/ case 10:
-          vt102_cursor_motion (v, 0, 1, 0, 1);
-          break;
          /*VT*/ case 11:
-          break;
          /*FF*/ case 12:
+          vt102_cursor_motion (v, 0, 1, 1);
           break;
          /*CR*/ case 13:
-          v->pos.x = 0;
+          v->pos.x = v->top_margin.x;
           break;
          /*SO*/ case 14:
          /*SI*/ case 15:
@@ -299,9 +476,40 @@ vt102_parse_char (VT102 * v, int c)
         /*regular character */ default:
           v->crt.screen[CRT_ADDR_POS (&v->pos)].chr = c;
           v->crt.screen[CRT_ADDR_POS (&v->pos)].attr = v->attr;
-          vt102_cursor_motion (v, 1, 0, 1, 1);
+          vt102_cursor_motion (v, 1, 0, 1);
         }
     }
 
-   v->crt.pos=v->pos;
+  v->crt.pos = v->pos;
+
+  vt102_status_line (v, "VT102 foo bar baz I'm the urban spaceman baby");
+}
+
+void
+vt102_parser_reset (VT102_parser * p)
+{
+  p->in_csi = 0;
+  p->in_escape = 0;
+  p->csi_ptr = 0;
+}
+
+void
+vt102_reset (VT102 * v)
+{
+  VT102_parser *p = &v->parser;
+
+  vt102_parser_reset (p);
+  crt_cls (&v->crt);
+
+
+  v->screen_start.x = 0;
+  v->screen_start.y = 0;
+  v->screen_end.x = VT102_COLS - 1;
+  v->screen_end.y = VT102_ROWS - 1;
+
+  v->top_margin = v->screen_start;
+  v->bottom_margin = v->screen_end;
+
+  v->pos = v->screen_start;
+
 }
diff --git a/src/vt102.h b/src/vt102.h
index 5a2d686..6942175 100644
--- a/src/vt102.h
+++ b/src/vt102.h
@@ -12,6 +12,9 @@
 
 /*
  * $Log$
+ * Revision 1.3  2008/02/04 20:23:55  james
+ * *** empty log message ***
+ *
  * Revision 1.2  2008/02/04 02:05:06  james
  * *** empty log message ***
  *
@@ -25,6 +28,10 @@
 
 #define VT102_CSI_LEN 128
 
+#define VT102_ROWS	24
+#define VT102_COLS	80
+#define VT102_STATUS_ROW	24
+
 typedef struct
 {
   int in_escape;
@@ -35,6 +42,8 @@ typedef struct
 
 typedef struct
 {
+  CRT_Pos top_margin,bottom_margin;
+  CRT_Pos screen_start,screen_end;
   VT102_parser parser;
   int attr;
   CRT crt;
-- 
2.30.2